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Finding the Fourth Proportional to 125,656.56, 188,484.84 and 42,608.88

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Solution

The fourth proportional to 125,656.56, 188,484.84 and 42,608.88 is: 63,913.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,656.56 : 188,484.84 = 42,608.88 : x
  2. Step 2: Convert to fraction form
    125,656.56/188,484.84 = 42,608.88/x
  3. Step 3: Cross multiply
    125,656.56x = 188,484.84 × 42,608.88
  4. Step 4: Simplify right side
    125,656.56x = 8,031,127,929.38
  5. Step 5: Solve for x
    x = 8,031,127,929.38/125,656.56
  6. Step 6: Final answer
    x = 63,913.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.